Samples and testers
Perfumes samples
Perfume samples can make a larger purchase better informed when you keep exact identities and useful notes. Treat each small quantity as a chance to understand the complete scent rather than an instant yes-or-no opening sniff.
A HUME Fragrance buying guide

Label before comparing
Save the product name and maker so later impressions do not get assigned to the wrong sample.
Use separate observations
Record opening, later texture and whether you want another wear. Avoid mixing several unfamiliar fragrances.
Choose an appropriate outcome
You may find a bottle favorite, discover a dislike or enjoy occasional variety. All can be useful results.
Try this before you buy
Create a sample log that ends with a repeat-wear decision rather than only a numerical opening score.